We did a sweep over the complexity parameter and then fine-tuned at the more promising values. The complexity parameter tunes how many instances will be used to draw the boundaries between classes. [How necessary is this?] Complexity is recommended to be modified by factors of ten which we did for the first sweep, from 0.01 to 100. Then we focused on the complexity from 0.2 to 1.4 as that seemed to maximize kappa. The highest kappa value we found to be at a complexity factor of 0.6